'use strict';

var is = require('bpmn-js/lib/util/ModelUtil').is,
    getBusinessObject = require('bpmn-js/lib/util/ModelUtil').getBusinessObject;

var ImplementationTypeHelper = require('../../../helper/ImplementationTypeHelper');

var externalTaskPriority = require('./implementation/ExternalTaskPriority');

function getServiceTaskLikeBusinessObject(element) {
    var bo = ImplementationTypeHelper.getServiceTaskLikeBusinessObject(element);

    // if the element is not a serviceTaskLike element, fetch the normal business object
    // This avoids the loss of the process / participant business object
    if (!bo) {
        bo = getBusinessObject(element);
    }

    return bo;
}

module.exports = function (group, element, bpmnFactory, translate) {

    var bo = getServiceTaskLikeBusinessObject(element);

    if (!bo) {
        return;
    }

    if (is(bo, 'activiti:TaskPriorized') || (is(bo, 'bpmn:Participant')) && bo.get('processRef')) {
        group.entries = group.entries.concat(externalTaskPriority(element, bpmnFactory, {
            getBusinessObject: function (element) {
                if (!is(bo, 'bpmn:Participant')) {
                    return bo;
                }
                return bo.get('processRef');
            }
        }, translate));
    }
};